Media State, Media Disconnected

The router we have been using has caused no problems for the past few months, but recently the second computer in the network just shut off. When restarted, a message from ICS stated that a network cable was unplugged. I first made sure the cable was connected in the computer and router. I then proceeded to go into the command prompt and tried to ping and ipconfig but i got "Media State...... Media Disconnected." I thought that maybe something was wrong with a port so I switched the cable to a different port. It is not recognizing anything. I have tried changing mutliple router settings and still get the same result. I was wondering if I could get some advice or help. It would be greatly appreciated. Thanks.

Firstly, you need to test the cable. Use the same cable on another computer and see if the connection works. If this doesn't help, check the NIC. Swap the NIC with one that you know is working. Also, try disconnecting the computer that is working and plugging this computer into its socket on the router.